40, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94K4X0
Retention of a house demolition and modifications to a previously approved replacement home in Mount Merrion.
D24A/0906/WEB · Dun Laoghaire Rathdown County Council · Lodged 13 November 2024
- Reference
- D24A/0906/WEB
- Authority
- Dun Laoghaire Rathdown County Council
- Register status
- Decided
- Type
- Permission for Retention
- Received
- 13 November 2024
Summary
AI-generatedThis application seeks retention permission for the demolition of the original house. It also proposes modifications to a previously approved plan, including omitting two rear projecting windows and reducing the scale of the rear extension.
Generated from the description above by an AI model and may contain mistakes. The council’s description is the authoritative record.
Official record
Development description
Permission is sought for modifications to previously permitted planning application reg/ref: d23a/0302 to include retention permission for demolition of the existing house; omission of the 2 no. Projecting windows to rear at first floor level; minor reduction in scale of the proposed single storey extension to rear; and all associated site works to a demolished two storey semi-detached house.
Land-use zoning
What this land is zoned for
“A To provide residential development and improve residential amenity while protecting the existing residential amenities”
Objective set by the COUNTY DEVELOPMENT PLAN 2022-2028 (2022–2028). The planning authority decides each application on its own merits — this is the zoning context, not a compliance assessment.
Read the zoning objectives in the development planBuilt & sold
What happened next
Beyond the decision: whether this development was built, and what property here has sold for.
Built — construction complete
A commencement notice records works starting on 9 September 2024.
Notified floor area: 130 m²
Recent sales nearby
within 500 m| Address | Date | Price | Distance |
|---|---|---|---|
| 7 Clonmore Rd, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 115 m |
| 98 Lr Kilmacud Rd, Stillorgan, Dublin | Jul 2025 | €1,187,000 | 156 m |
| 33 Clonmore Rd, Mount Merrion, Dublin | Apr 2026 | €1,425,000 | 158 m |
| 17 Dale Close, Stillorgan | Nov 2025 | €920,000 | 207 m |
| 13 Redesdale Rd, Mount Merrion, Dublin | Sept 2025 | €850,000 | 216 m |
| 28 South Ave, Mount Merrion, Dublin | Sept 2025 | €1,400,000 | 224 m |
| 24 South Ave, Mount Merrion, Dublin | Dec 2025 | €1,580,000 | 224 m |
| 10 Redesdale Rd, Mount Merrion, Co Dublin | Jun 2026 | €1,220,000 | 226 m |
Nearby properties, not this site — a guide to local values.
Sources: Building Control Management System (commencement notices) and the Residential Property Price Register, licensed under CC BY 4.0. Records are matched to this application by location and may not be exhaustive; always confirm against the official source before relying on them.
Key dates
Timeline
- Application received13 November 2024
- Decision due16 January 2025
- Decision issued14 January 2025
In the area
Applications near this site
Other planning applications within about 500 m — what else is being proposed or built nearby.
- GrantedAt this site
Retention Permission is sought for demolition of the existing dwelling and garage in its entirety, Permission…
40, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94K4X0
D25A/0089/WEBDún Laoghaire–RathdownLodged 6 Feb 2025New dwelling
- GrantedAt this site
Demolition of the single storey conservatory extension to rear and the garage and store to side to allow for…
40, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94K4X0
D23A/0302Dún Laoghaire–RathdownLodged 8 May 2023Extension
- Compliance submissionAt this site
Compliance with Condition No 12a of Reg Ref No. D25A/0089/WEB
40, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94K4X0
D25A/0089/WEB/C1Dún Laoghaire–RathdownLodged 6 Jun 2025Other
- Awaiting decisionAt this site
Compliance with Condition No. 3 of Reg Ref No. D23A/0302
40, Thornhill Road, Mount Merrion, Blackrock, Dublin, A94K4X0
D23A/0302/C1Dún Laoghaire–RathdownLodged 1 Nov 2024Other
- GrantedAt this site
Permission is sought for demolition of existing single storey flat roof extension to rear and side garage and…
42, Thornhill Road, Mount Merrion, Co. Dublin
D12A/0504Dún Laoghaire–RathdownLodged 18 Dec 2012Extension
- GrantedAt this site
Retention permission. The area to be retained consists of the infilled area to the rear of the ground floor…
36 Thornhill Road, Mount Merrion, Co. Dublin, A94A6K2
D22B/0072Dún Laoghaire–RathdownLodged 17 Feb 2022Retention
- GrantedAt this site
Retention is sought for widened (3.2m) vehicular entrance to the front and permission is sought for the…
36, Thornhill Road, Mount Merrion, Co Dublin
D20A/0738Dún Laoghaire–RathdownLodged 9 Oct 2020Extension
- Granted30 m away
For the following development — (a) A single storey rear dining room rear dining room extension. (b) A two…
46, Thornhill Road, Mount Merrion, Co. Dublin
D05B/0470Dún Laoghaire–RathdownLodged 22 Jun 2005Extension
Related developments
Similar applications
Ranked by what these developments actually propose, not by matching words — so you can see how comparable applications were decided.
- GrantedExtension
Permission is sought to demolish the existing single storey extension to the side (17sqm) of the existing…
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D12B/0399Dún Laoghaire–RathdownLodged 20 Dec 2012
- GrantedExtension
Permission to demolish the existing single storey extension to the side (37 sqm) of the existing…
15, Churchtown Road Lower, Churchtown, Dublin 14
D13B/0235Dún Laoghaire–RathdownLodged 4 Jul 2013
- GrantedExtension
Permission is sought for development which will consist of demolition of existing single storey front…
9 Balally Grove, Dublin 16, D16 EY68
D20B/0361Dún Laoghaire–RathdownLodged 9 Nov 2020
- GrantedExtension
Permission for demolition of part of the existing house to the side at ground and first floors and…
8 Oakwood, Tivoli Road, Dun Laoghaire, Co Dublin A96 TN29
D18B/0202Dún Laoghaire–RathdownLodged 3 May 2018
- GrantedExtension
Permission for the demolition of rear and side extensions, the addition of a single storey rear garden level…
42, Cross Avenue, Blackrock, Dublin, A94W0C5
D23B/0580Dún Laoghaire–RathdownLodged 15 Dec 2023
- GrantedExtension
Permission is sought for the demolition of existing single storey extension to rear, proposed construction of…
36, Woodlands Drive, Blackrock, Co Dublin
D07B/0513Dún Laoghaire–RathdownLodged 8 Jun 2007
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